private void drawMultitouchDebugMarks(Canvas canvas) {
if (currTouchPoint.isDown()) {
float[] xs = currTouchPoint.getXs();
float[] ys = currTouchPoint.getYs();
float[] pressures = currTouchPoint.getPressures();
int numPoints = Math.min(currTouchPoint.getNumTouchPoints(), 2);
for (int i = 0; i < numPoints; i++)
canvas.drawCircle(xs[i], ys[i], 50 + pressures[i] * 80, mLinePaintTouchPointCircle);
if (numPoints == 2) canvas.drawLine(xs[0], ys[0], xs[1], ys[1], mLinePaintTouchPointCircle);
}
}
/* (non-Javadoc)
* @see com.ds.avare.MultiTouchController.MultiTouchObjectCanvas#setPositionAndScale(java.lang.Object, com.ds.avare.MultiTouchController.PositionAndScale, com.ds.avare.MultiTouchController.PointInfo)
*/
public boolean setPositionAndScale(
Object obj, PositionAndScale newObjPosAndScale, PointInfo touchPoint) {
touchPointChanged(touchPoint);
if (false == mCurrTouchPoint.isMultiTouch()) {
/*
* Do not move on drag
*/
if (mDragPlanPoint >= 0) {
return true;
}
/*
* Do not move on multitouch
*/
if (mDraw && mService != null) {
float x = mCurrTouchPoint.getX() * mScale.getScaleFactor();
float y = mCurrTouchPoint.getY() * mScale.getScaleFactor();
/*
* Threshold the drawing so we do not generate too many points
*/
if (mPref.isTrackUp()) {
double thetab = mGpsParams.getBearing();
double p[] = new double[2];
double c_x = mOrigin.getOffsetX(mGpsParams.getLongitude());
double c_y = mOrigin.getOffsetY(mGpsParams.getLatitude());
p = Helper.rotateCoord(c_x, c_y, thetab, x, y);
mService.getDraw().addPoint((float) p[0], (float) p[1], mOrigin);
} else {
mService.getDraw().addPoint(x, y, mOrigin);
}
return true;
}
// Pan
if (mPan.setMove(newObjPosAndScale.getXOff(), newObjPosAndScale.getYOff())) {
/*
* Query when we have moved one tile. This will happen in background.
*/
loadTiles();
}
} else {
// Zooming does not change drag
mDragPlanPoint = -1;
/*
* on double touch find distance and bearing between two points.
*/
if (mPointProjection == null) {
double x0 = mCurrTouchPoint.getXs()[0];
double y0 = mCurrTouchPoint.getYs()[0];
double x1 = mCurrTouchPoint.getXs()[1];
double y1 = mCurrTouchPoint.getYs()[1];
double lon0, lat0, lon1, lat1;
// convert to origin coord if Trackup
if (mPref.isTrackUp()) {
double c_x = mOrigin.getOffsetX(mGpsParams.getLongitude());
double c_y = mOrigin.getOffsetY(mGpsParams.getLatitude());
double thetab = mGpsParams.getBearing();
double p0[], p1[];
p0 = Helper.rotateCoord(c_x, c_y, thetab, x0, y0);
p1 = Helper.rotateCoord(c_x, c_y, thetab, x1, y1);
lon0 = mOrigin.getLongitudeOf(p0[0]);
lat0 = mOrigin.getLatitudeOf(p0[1]);
lon1 = mOrigin.getLongitudeOf(p1[0]);
lat1 = mOrigin.getLatitudeOf(p1[1]);
} else {
lon0 = mOrigin.getLongitudeOf(x0);
lat0 = mOrigin.getLatitudeOf(y0);
lon1 = mOrigin.getLongitudeOf(x1);
lat1 = mOrigin.getLatitudeOf(y1);
}
mPointProjection = new Projection(lon0, lat0, lon1, lat1);
}
/*
* Clamp scaling.
*/
mScale.setScaleFactor(newObjPosAndScale.getScale());
}
updateCoordinates();
invalidate();
return true;
}